After typing reports all day, the accountant rubbed her sore knuckles at her desk.

整天打報告之後，那位會計師在座位上揉著痠痛的指關節。

The warehouse worker scraped his knuckle while loading boxes onto the delivery truck.

那名倉庫員工在把箱子搬上送貨卡車時擦傷了指關節。

The manager knocked on the meeting room door with his knuckles before entering quietly.

經理先用指關節敲了敲會議室的門，才安靜地走進去。